논문 상세보기
pp.273-280
비소의 농도에 따른 봉의꼬리의 생육 반응 및 비소 축적능을 분석하기 위해 As(III)와 As(V)의 농도를 달리하여 봉의꼬리를 12주간 재배하였다. 연구의 결과 비소의 종류에 관계없이 50, 500mg·kg-1 처리구는 비소 무처리구와 생육이 비슷하였으나, 비소의 농도가 증가할수록 초장이 감소되는 경향을 보였다. 비소의 농도를 50, 500mg·kg-1 처리하여 재배한 봉의꼬리 지상부의 비소 축적능은 As(III) 처리구가 각 802.7, 2,956.0mg·kg-1 DW로, As(V) 처리구(622.6, 2,841mg·kg-1 DW)에 비해 높았다. 그러나 고농도 처리구인 1,000과 2,000mg·kg-1에서는 As(V) 처리구(3,883.3, 5,250.6mg·kg-1 DW)에서 As(III) 처리구(3,347.8, 4,272.7 mg·kg-1 DW)에 비해 비소 축적능이 더 우수하였다. 지하부의 축적능은 2,000mg·kg-1 농도 처리구를 제외한 모든 농도에서 sodium arsenate 처리구가 sodium arsenite 처리구에 비해 높았다.
This study was carried out to analyze the effect of arsenic concentrations on growth and arsenic accumulation ability of Pteris multifida. P. multifida was cultivated on compost contaminated with different concentrations of As (III) and As (V) for 12 weeks. Treatment of 50 and 500 mg·kg-1 arsenic showed similar growth to that of arsenic untreated control plot regardless of arsenic types, but plant height tended to decrease as concentration of arsenic increased. Arsenic accumulation of aerial part grown with arsenic concentrations of 50 and 500 mg·kg-1 were 802.7, 2,956.0 mg·kg-1 DW respectively in As (III) treatment and were higher than As (V) treatment (622.6, 2,841 mg·kg-1 DW). However, arsenic accumulation of As (V) treatment (3,883.3, 5,250.6 mg·kg-1 DW) were higher than that of As (III) treatment (3,347.8, 4,272.7 mg·kg-1 DW) when cultivated in 1,000 and 2,000 mg·kg-1 of arsenic. In all concentrations, except 2,000 mg·kg-1 DW, the accumulation of underground part was higher in As (III) treatment than in As (V) treatment.
